ZiLOG Z8 User Manual

Z8 Microcontrollers
Instruction Set ZiLOG
12-8 UM001601-0803
12.5 Z8 INSTRUCTION SUMMARY
Instruction
and Operation
Address
Mode
Op Code
Byte (Hex)
Flags Affected
dst src C Z S V D H
ADC dst, src
dst ← dst + src
+C
† 1[ ]
✻ ✻ ✻ ✻
0
✻
ADD dst, src
dst ← dst + src
† 0[ ]
✻ ✻ ✻ ✻
0
✻
AND dst, src
dst ← dst AND
src
† 5[ ] –
✻ ✻
0 – –
CALL dst DA D6 – – – – – –
SP ← SP – 2 IRR D4
and PC ← dst
or @ SP ← PC
CCF EF
✻
– – – – –
C ←NOT C
CLR dst R B0 – – – – – –
dst ← 0 IR B1
COM dst R 60 –
✻ ✻
0 – –
dst ← NOT dst IR 61
CP dst, src †
A[ ] ✻ ✻ ✻ ✻
– –
dst − src
DA dst R 40
✻ ✻ ✻
X – –
dst ← DA dst IR 41
DEC dst R 00 –
✻ ✻ ✻
– –
dst ← dst – 1 IR 01
DECW dst R R 80 –
✻ ✻ ✻
– –
dst ← dst – 1 IR 81
DI dst 8 F – – – – – –
IMR(7) ← 0
DJNZr, dst RA rA – – – – – –
r ← r – 1 r=0-F
if r ≠ 0
PC ← PC + dst
Range:+127,
-128
EI 9 F – – – – – –
IMR(7) ← 1
HALT 7 F – – – – – –
INC dst
dst ← dst + 1
r rE –
✻ ✻ ✻
– –
r=0-F
R 20
IR 21
INCW dst RR A0 –
✻ ✻ ✻
– –
dst ← dst + 1 IR A1
Instruction
and Operation
Address
Mode
Op Code
Byte (Hex)
Flags Affected
dst src C Z S V D H
IRET B F
✻ ✻ ✻ ✻ ✻ ✻
FLAGS←@SP;
SP ← SP + 1
PC ← @SP;
SP ← SP + 2;
and IMR(7) – 1
JP cc, dst DA cD – – – – – –
if cc is true, c = 0 – F
then PC ← dst IRR 30
JR cc, dst RA cB – – – – – –
if cc is true, c = 0 – F
PC ← PC + dst
Range: +127,
–128
LD dst, src r Im r C – – – – – –
dst ← src r R r 8
R r r 9
r = 0 – F
r X C 7
X r D 7
r Ir E 3
Ir r F 3
R R E 4
R IR E 5
R IM E 6
IR IM E 7
IR R F 5
LDC dst, src r Irr C 2 – – – – – –
dst ← src lrr r D 2
LDCI dst, src Ir Irr C 3 – – – – – –
dst ← src lrr Ir D 3
r ← r + 1 or
rr ←rr + 1
LDE dst, src r Irr 82 – – – – – –
dst ← src lrr r 92
LDEI dst, src Ir Irr 83 – – – – – –
dst ← src and lrr Ir 93
r ← r + 1 or
rr ←rr + 1
NOP FF – – – – – –
OR dst, src † 4[ ] –
✻ ✻
0 – –
dst ← dst OR src

ZiLOG Z8 Specifications

General

Brand	ZiLOG
Model	Z8
Category	Desktop
Language	English